I suspect we are looking at the station molds that the hull will be built on. So none of this will see water.
Agree, otherwise why would you make them removable. Unless they are doing a lot of dry fit with these, make sure all the joints work, then pull it apart and put wood dominos in.
Dominos in boat construction could work, after all boats were built for a long time with wood pegs and iron nails. It's the sum of the construction. But if your going to use Dominos, you would really design the boat around what you could do with them, take advantage of their ability.